Eleven times in the last 50 days, one man at Yucca Flat, Nev. has given the word to set off an atom blast, and at least 50 times he has postponed explosions. He is Dr. Alvin Cushman Graves, 46, scientific adviser to the test manager. Dr. Graves must be satisfied that all Atomic Energy Commission safety requirements have been met. For example, the AEC has ruled that nearby towns such as Las Vegas, Tonopah, Indian Springs, Caliente and Paradise Valley shall not receive more than 3.9 roentgens* from radioactive fallout within any twelvemonth, a figure far below a commonly accepted danger...
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